ring_buffer_read_page_data(9)

💫 ring_buffer_read_page_data(9) 💫

okay bestie, this one is from the Kernel API Manual, section 9, and it is so chill. it's literally one function that hands you a pointer. no drama, no syscalls, just vibes and a page 🫶

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✨ NAME ✨

ring_buffer_read_page_data — get pointer to the data in the page. that's it. that's the whole thing. she's a one-job icon 👑

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🌸 SYNOPSIS 🌸

void * ring_buffer_read_page_data (struct buffer_data_read_page *page );

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🎀 ARGUMENTS 🎀

• page — the page you want the data from. give her the page, she gives you the pointer. simple as that 🦋

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💖 DESCRIPTION 💖

Returns a pointer to the actual data in this page. like, the real data, not the wrapper, not the metadata, the actual good stuff. no cap. one call, pointer acquired, slay 💅

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🔥 SEE ALSO 🔥

okay so this is the part where the manpage just dumps the entire friend group on you 😭 like literally everyone in ./kernel/trace/ring_buffer.c showed up. take a breath. here they all are, in order, bestie:

ring_buffer_event_length(9), ring_buffer_event_data(9), rb_page_capacity(9), rb_subbuf_capacity(9), rb_subbuf_max_data_size(9), rb_subbuf_start(9), ring_buffer_event_time_stamp(9), ring_buffer_nr_dirty_pages(9), ring_buffer_wake_waiters(9), ring_buffer_wait(9), ring_buffer_poll_wait(9), rb_check_pages(9), rb_validate_buffer(9), __ring_buffer_alloc(9), __ring_buffer_alloc_range(9), __ring_buffer_alloc_remote(9), ring_buffer_free(9), ring_buffer_resize(9), rb_update_event(9), ring_buffer_nest_start(9), ring_buffer_nest_end(9), ring_buffer_unlock_commit(9), ring_buffer_lock_reserve(9), ring_buffer_discard_commit(9), ring_buffer_write(9), ring_buffer_record_disable(9), ring_buffer_record_enable(9), ring_buffer_record_off(9), ring_buffer_record_on(9), ring_buffer_record_is_on(9), ring_buffer_record_is_set_on(9), ring_buffer_record_is_on_cpu(9), ring_buffer_record_disable_cpu(9), ring_buffer_record_enable_cpu(9), ring_buffer_oldest_event_ts(9), ring_buffer_bytes_cpu(9), ring_buffer_entries_cpu(9), ring_buffer_overrun_cpu(9), ring_buffer_commit_overrun_cpu(9), ring_buffer_dropped_events_cpu(9), ring_buffer_read_events_cpu(9), ring_buffer_entries(9), ring_buffer_overruns(9), ring_buffer_iter_reset(9), ring_buffer_iter_empty(9), ring_buffer_peek(9), ring_buffer_iter_peek(9), ring_buffer_consume(9), ring_buffer_read_start(9), ring_buffer_read_finish(9), ring_buffer_iter_advance(9), ring_buffer_size(9), ring_buffer_max_event_size(9), ring_buffer_reset_cpu(9), ring_buffer_reset_online_cpus(9), ring_buffer_reset(9), ring_buffer_empty(9), ring_buffer_empty_cpu(9), ring_buffer_swap_cpu(9), ring_buffer_alloc_read_page(9), ring_buffer_free_read_page(9), ring_buffer_read_page(9), ring_buffer_read_page_size(9), ring_buffer_subbuf_size_get(9), ring_buffer_subbuf_order_get(9), ring_buffer_subbuf_order_set(9)

also the source file itself: ./kernel/trace/ring_buffer.c — go read it if you're feeling brave 🧚

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and that's the whole page, bestie. no notes. 💜

from the ./kernel/trace source, October 2026 — stay iconic, drink water, and always free your pages 🌈⭐